Hiv is a retrovirus which contains rna as its genetic material. once hiv enters the body, it attaches to t cells that other lymphocytes respond to infection. gradually, hiv kills off most of the t cells. the rna is inside the capsule of the virus and is labeled

The correct answer is - A (labelled in attached diagram)

Explanation:

The HIV virus is a retrovirus that have RNA as genetic material that is present in the center in the capsule of the virus. HIV is a virus that kills the helper t-cells that are the immune cells of the body that activates other lymphocyte cells to act on infection.

Due to the killing most of the helper T cells the HIV affect the immune system of the infected individual.

Thus, the correct answer is - labelled as A in diagram attached below.

is called echinoderms

then that particular organisms become extinct.